What lab insturments would students use to measure seawater density

Which describes radioactive decay of a substance

Which animal group is the largest and contains more species from all the other living groups combined? is it mammals or

How do tides affect the organisms living in intertidal zones? a. no organisms live in intertidal zones due to the tumultuous environment. b. the mechanical forces of the waves keeps the organisms clean. c. only plants live in intertidal zones because the animals float away with the waves and never return. d. the mechanical forces of the waves can dislodge the organisms from their habitat.